My school just purchased new Epson Powerlite 118 projectors of all the classrooms. Today when I tried to use it with my Inspiron 3593 laptop, I got a "No Signal" message. The projector came with a VGA cable, which I attached to my laptop with an HDMI adapter (same one I used with the old InFocus projector I had as well as with another older projector--it worked fine with both of those). What do I need to do to get my Inspiron to work with the Epson projector? Help!